M. Perri (ASDC) for the Swift team
Sugita et al. (GCN Circ. 28240) reported the GRB detection. The MAXI/GSC nova alert system triggered a bright uncatalogued X-ray transient source at 15:41:27 UT on 2020 Aug 9. Table 1 contains the best reported positions from Swift.
Table 2 is a summary of GCN Circulars about this GRB from observatories other than Swift.
BAT did not observe this burst.
Analysis of the initial XRT data was reported by Perri et al. (GCN Circ. 28241).
The light curve (Figure 2) can be modelled with a power-law decay with a decay index of α=1.7 (+2.0, -1.2).
UVOT results are not available.
Figure 1. The BAT light curve is not available.
Figure 2. The XRT light curve.
Any data from a crosshatched region are not included in the fit.
RA (J2000) | Dec (J2000) | Error | Note | Reference |
---|---|---|---|---|
0 |
-73°50'44.1" | 4.5" | XRT-final | UKSSDC |
0 |
-73°50'44.1" | 4.5" | XRT | Perri et al. GCN Circ. 28241 |
Band | Authors | GCN Circ. | Subject | Observatory | Notes |
---|---|---|---|---|---|
Optical | Hu et al. | 28242 | BOOTES-3/YA optical upper limit | BOOTES-3 | upper limits |
Optical | Lipunov et al. | 28243 | Fermi GRB 200809B: Global MASTER-Net observations report |
MASTER | |
X-ray | Sugita et al. | 28240 | MAXI/GSC detection | MAXI | detection |
Gamma-ray | Fermi | 28236 | Fermi GBM Final Real-time Localization | Fermi GBM | |
Gamma-ray | Gupta et al. | 28238 | AstroSat CZTI detection | CZTI | |
Gamma-ray | Dunwoody et al. | 28244 | Fermi GBM detection | Fermi GBM | Fluence=3.717±0.387x1 (4 |
August 11, 2020